Speaker magnetic circuit, method of manufacturing the speaker magnetic circuit and speaker device

摘要

Even when it is thinned, the magnetic gap, in particular, to provide a speaker magnetic circuit to a sufficient magnetic flux density can be obtained at the position where the voice coil is supported by reducing the occurrence of leakage flux. Speaker magnetic circuit 11 has a yoke 12, a magnet group 13. Magnet group 13 is composed of the outer magnet 21 to 24, from 25 to 28 Metropolitan inner magnet. 25 to 28 the inner magnet and outer magnets 21-24 are magnetized in a direction oblique to the thickness direction.